bobcat 8 tooth sprocket - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 04-03-2015, 07:44 PM Thread Starter
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bobcat 8 tooth sprocket

My bobcat has a very small 8 tooth sprocket, for a #35 chain that drives the auger. It has wore down enough so that the chain wears notches in the hub. The sprocket has a 1/2" dia. hole with a flat side that seemed to have been pressed onto the hub. So perhaps its a 2 piece component? The main part of the hub is 1 1/8" dia. and is bored out to fit on the 7/8" axle. ( see three photo attached). I have searched on the web an could find nothing like this. I have mig welder,drill press, die grinder. files so wondered if I could build up the sprocket. One concern I have in doing this is getting it accurate enough so chain wouldn't bounce. Since its so small I think must wear quickly. Input would be appreciated.
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Last edited by AL-; 04-03-2015 at 07:47 PM.
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post #2 of 6 Old 04-03-2015, 10:15 PM
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Here you go.

TSUBAKI Sprocket, Plain, #35, OD 1.130 In 35B8 - G1194602 at Zoro

You'll have to drill it out and weld it to your existing shaft. Did this repair to my machine this year as well.

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post #3 of 6 Old 04-04-2015, 08:32 AM
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On some BobcaTs the sprocket is welded onto the shaft. You can just get a round bore sprocket to fit on the D shaft and run a bead around the interface at the end. In a generation when you need to repeat just pull out the die grinder and repeat. When I did mine the sprocket came from McMaster Carr.
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post #4 of 6 Old 04-04-2015, 09:19 AM
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I tried to find a #35 with 8 but it seems the smallest one was a 9 tooth.

McMaster-Carr

Nice selection in there.

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post #5 of 6 Old 04-04-2015, 12:51 PM Thread Starter
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sj701! I ordered one and the shipping was only $5.00. which I thought great for a small order. Was your old sprocket pressed on?, mine looks like it was and I'm thinking I can press it off.

Kiss, 9 teeth was as good as I found and I thought about trying one of those but my Bobcat is only 4 HP

My bucket is 20'' the same as the 5HP so I wondered about the actual difference in the two models. Could the 4HP have been the earlier version

Thanks all!
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post #6 of 6 Old 04-05-2015, 12:38 AM
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Quote:
Originally Posted by AL- View Post
sj701! I ordered one and the shipping was only $5.00. which I thought great for a small order. Was your old sprocket pressed on?, mine looks like it was and I'm thinking I can press it off.

Kiss, 9 teeth was as good as I found and I thought about trying one of those but my Bobcat is only 4 HP

My bucket is 20'' the same as the 5HP so I wondered about the actual difference in the two models. Could the 4HP have been the earlier version

Thanks all!
Mine was welded on, your model is earlier than mine. I had to grind it off using my angle grinder, drill the sprocket out to 1/2" and then weld it onto the shaft. I would use a drill stop or some other way to mark the spot it needs to end up on the shaft and help keep it square during welding. In afew years I'm sure I'll have to do this procedure again, the 8 tooth sprocket is really too small for that chain pitch.

I would replace your chains as well, they are probably stretched and there is not much room to tension any of the chains so that will wear out your new sprocket faster.

Snowblowers in the shed. All made in the good ol USA.

Bobcat 28" 2 stage 8hp Briggs
Bobcat 24" 2 stage 7hp Briggs
Bobcat 20" 2 stage repowered with Tecumseh OHH50
Lawnboy Snowboy
Lawnboy Snowboy self propelled
Toro 6000 Rtek Powered
Toro CCR2000 Suzuki Powered
Toro CCR2500 Tecumseh Powered
Toro CCR3650 boxy one, Rtek Powered

Last edited by sj701; 04-05-2015 at 12:45 AM.
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